| Controls (n = 4687) | Cases (n = 3663) | ||
---|---|---|---|---|
 | Frequency | Mean (SD) or % | Frequency | Mean (SD) or % |
Age at enrollment (years) | 4687 | 55.62 (12.01) | 3663 | 54.94 (11.74) |
Age at enrollment (years) | ||||
 18–29 | 24 | 0.51 | 30 | 0.82 |
 30–39 | 396 | 8.45 | 306 | 8.35 |
 40–49 | 1107 | 23.62 | 945 | 25.8 |
 50–59 | 1461 | 31.17 | 1087 | 29.68 |
 60–69 | 986 | 21.04 | 819 | 22.36 |
 70–79 | 609 | 12.99 | 433 | 11.82 |
 80+ | 104 | 2.22 | 43 | 1.17 |
DNA source | ||||
 Blood | 1817 | 38.77 | 1961 | 53.54 |
 Mouthwash | 2243 | 47.86 | 853 | 23.29 |
 Saliva | 627 | 13.38 | 849 | 23.18 |
Study | ||||
 BWHS | 2249 | 48.98 | 901 | 24.6 |
 WCHS | 834 | 17.79 | 821 | 22.41 |
 CBCS | 615 | 13.12 | 1408 | 38.44 |
 MEC | 989 | 21.1 | 533 | 14.55 |
Location | ||||
 New Jersey (NJ) | 573 | 12.23 | 613 | 16.73 |
 Northeast (except NJ) | 1245 | 26.56 | 441 | 12.04 |
 South | 1476 | 31.49 | 1720 | 46.96 |
 Midwest | 238 | 5.08 | 200 | 5.46 |
 West | 1155 | 24.64 | 689 | 18.81 |
Stage | ||||
 In situ | NA |  | 376 | 10.26 |
 Invasive | NA |  | 2528 | 69.01 |
 Unknown | NA |  | 759 | 20.72 |
Tumor receptor status | ||||
 ER | ||||
  Positive | NA |  | 1983 | 54.14 |
  Negative | NA |  | 1098 | 29.98 |
  Unknown | NA |  | 582 | 15.89 |
 PR | ||||
  Positive | NA |  | 1580 | 43.13 |
  Negative | NA |  | 1343 | 36.66 |
  Unknown | NA |  | 740 | 20.2 |
 HER2 | ||||
  Positive | NA |  | 344 | 9.39 |
  Negative | NA |  | 1356 | 37.02 |
  Unknown | NA |  | 1963 | 53.59 |
 Triple negative | ||||
  Yes | NA |  | 405 | 11.06 |
  No | NA |  | 1613 | 44.03 |
  Unknown | NA |  | 1645 | 44.91 |